Allen b



A. B. LINN.

CARPET SWEEPER.

(No Model.)

N01 599,671. Patented Feb. 22, 1898.

WITNESSES;

UNITED STATES PATENT QFFICE.

ALLEN B. LINN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO T. STEWART WHITE, THOMAS FRIANT, GAIUS W. PERKINS, AND CHARLES J. REED,

OF SAME PLACE.

.CARPET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 599,671, dated February 22, 1898. Application filed July 23, 1 89'7. Serial No. 645,693. -(No model.)

ful Improvements in Carpet-Sweepers; and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvementsin' carpet-sweepers; and its object is to provide the same with certainnew and useful features hereinafter more fully described, and particularly pointed out in the claims, reference being had to the accompanying drawings, in which--- Figure 1 is an end elevation of a device embodying my invention; Fig. 2, the same with parts broken away to show construction; Fig. 3, a plan view of one end of the same; Fig. 4, a detail showing construction of the pintle and friction-tires, and Fig: 5 a detail of the pan-dumping mechanism.

Like letters refer to like parts in all of the figures.

A is the case, having a rib A on its top; B, the brush-shaft, having pulleys B on its ends; 0, the driving-wheels, journaled on the ends of the springs D and held in engagement with said pulleys thereby. Said springs D are secured to the inclined portions of the top of the case A by clasps E and lie closely beneath the ribs A, which form guides for the same and prevent lateral movement and, extending over the ends of said case, turn at right angles and extend downward inside the guard-bars F and below the same a short distance and are then turned outward, forming stops D, adapted to engage the under side of said guard-bars. The brush-shaft is journaled on tubular pintles G, secured to the guard-bars F, which bars have offsets or depressions at the places of attachment of said pintles, so that the guard-band or buffer H will not close the outer ends of the openings in said pintle G.

I is the bail, which is journaled in the cas ings J and passing through the same is provided on its inner ends with crank-arms K,

to which are attached the springs L. Said springs L are secured at their opposite ends to studs on said casing J, and as said armsK are in line with said bail exert a force to hold said bail in an inclined position relative to the case A, and projections J on the casing J engage and hold said bail when in a vertical position. Said case A is provided with the ordinary dust-pans M, pivoted therein, one of said pivots of each pan extending through the end wall of said case and turned at right angles, forming a crank N, the other end beingrigidly attached to said pan. A lever O is pivoted to the outer end of said crank N and, extending upward through the casing J, is provided within said casing with a spring P, attached to the end of the case A, and thus whe'n'the operator pulls upon said lever 0, against the action of the spring P, the crank is turned in its bearing in the end of the case and the pan opened, and when said lever O is released said spring P forces the same downward and operates said crank to close the pan. A recess R is provided in the outside of the wall of the case, in which the arm of said crank vibrates, thus allowing the lever O to lie closely against said wall.

The drive-wheels O and pulley B are provided with friction-tires Q, preferably of rubber, having corrugated faces, the corr-u gations of the pulleys conforming to that of the wheels and thus meshing together and giving greater frictionalsurface. The backs of said tires are recessed or cut away, and ribs on the peripheries of the Wheels engage said recesses and hold the same in place; also, less material is required for the tire in this construction, the rib on the wheel being substituted for the rubber of the tire. The springs D are so formed that the wheels G are normally held in contact with the pulley of the brush-shaft and the stops D at a distance from the guardbars, and when pressure is applied to the bail I said springs yield until the guard-bars F 5 contact the stops D and the case A and brush are brought nearer the floor. In this confree from dust, the casings J forming coverings for the operative mechanism of the-bail and dust-pans and also a place of attachment for said bail. To prevent the dust from clogging the journals of the brush-shaft, tubular pintles are provided, thus allowing the dust which accumulates in the openings in the ends of said brush-shaft to escape into said pintles and out at their outer ends, the guard-bars being curved away from the buifer-band for this purpose.

Having thus fully described my invention, what I claim is 1. In a carpet-sweeper, a case having inclined portions, guard-bars, a brush-shaft having pulleys journaled on said bars, springs attached near their middle to said inclined sides and extending over the ends of the same inside said bars, drive-wheels journaled on said springs, and stops on said springs to engage said bars, substantially as described.

2. In a carpet-sweeper, a case having inclined portions, a longitudinal rib on said portions, guard-bars, a brush-shaft having pulleys 011 its ends j ournaled on said bars, springs extending across and over the ends of said case and engaging said rib, a clip securing said spring to said case near the middle, drivewheels journaled on said springs, and stops on the ends of said springs to engage said guard-bars, substantially as described.

3. In a carpet-sweeper, a case, guard-bars on said case, tubular pintles on said guardbars, each pintle having an obstructed opening through its axis, and a brush-shaft having axial openings and journaled on said pintles, substantially as described.

4. In a carpet-sweeper, a case, guard-bars extending across the ends of said case and having depressions near their middle, a buffer-band secured to said case and guard-bars, tubular pintles secured to and extending through said bars at said depressions, and a brush-shaft journaled on said pintles, substantially as described.

5. In a carpet-sweeper, in combination with a case, and a bail having a crank-arm, and a spring attached to said arm, a supplementary case on the outside of said first-named case and having an opening in which said bail is journaled, said cases taken together wholly inclosing and protecting said crank-arm and spring substantially as described.

6. In combination with a carpet-sweeper case, dust-pans journaled therein, a crank forming one of said journals and extending through the wall of said case, a lever attached to the outside of said case and pivotally connected to said crank, and a spring engaging said lever, substantially as described.

7. In a carpet-sweeper, in combination with a vertically-movable lever to operate the dustpan and a spring to operate said lever, and a bail having a crank-arm, and a spring to operate said arm; a casing having an opening for said lever and an opening in which the bail is pivoted, and inclosing the crank-arm, the spring and a portion of the lever, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ALLEN B. LINN.

WVitnesses:

L. T. GIBSON, A. C. SANFORD. 

